Final Setup - Novell SLRS 8 Admin Manual

5.3.8 Final Setup

Now prepare the services actually used in the SUSE LINUX Retail Solution
infrastructure. Provide failover for the services dhcpd, named, and tftpd.
All data that is necessary for the services must be moved to the mirrored di-
rectory /drbd and must be linked to the locations where the daemons expect
the data. Under /drbd, a directory structure must be built to accommodate
the data, the data must be moved there, and the new locations must be linked
to the original locations in the file system. In addition, some tasks must be ex-
ecuted on the secondary node that were already accomplished on the primary
node by the posInitBranchserver.sh script.
SUSE LINUX does not provide any scripts to take care of the tasks mentioned
above. Make sure the following data and symbolic links are present:
Below the path /drbd, the following directories must exist: etc, tftpboot,
var.
/etc/opt/SLES/POS must be linked to /drbd/etc/opt/SLES/POS.
/var/named must be linked to /drbd/var/named.
/var/lib/dhcp must be linked to /drbd/var/lib/dhcp.
In the file /etc/ha.d/haresources, comment the rest of the last line with the
entries named dhcpd atftpd on both nodes. You have already edited this line
in a previous step.
Stop Heartbeat on the primary server by entering rcheartbeat stop. Wait
for the secondary server to take over. Then, on the secondary server, enter the
following commands to complete the configuration of the DNS name server
module:
/sbin/SuSEconfig --module named
rcnamed restart
On the primary server, enter rcheartbeat start to restart Heartbeat. Wait
for the server to resume its role as the primary node in the high availability
system.
In a high availability setup, the dhcpd, named, and atftpd services should only
be active on the primary server. They should not be started automatically;
Heartbeat takes care of starting and stopping them. Turn off automatic start of
the services during boot by entering the following commands on both branch
servers:
chkconfig dhcpd off
chkconfig named off
chkconfig atftpd off
Enable automatic start of Heartbeat with chkconfig heartbeat on.
5.3 Installation of the Highly Available Branch Servers
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